<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <input list="list">
    <datalist id="list">
        <option value="长沙">长沙</option>
        <option value="湘潭">湘潭</option>
        <option value="株洲">株洲</option>
        <option value="衡阳">衡阳</option>
    </datalist>
</body>
</html>